Black newly applied sealcoat contrasts with unsealed asphalt
By Water Resources Mission Area
June 2004 (approx.)
Detailed Description
Newly applied coal-tar-based sealcoat is dark black, sharply contrasting with the unsealed asphalt parking lot below. Coal-tar-based sealcoat is a potent source of polycyclic aromatic hydrocarbons (PAHs).
Sources/Usage
Public Domain.